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The type of bond that holds together neighboring subunits in a single strand of DNA is a?

1) Hydrogen bond
2) Covalent bond
3) Ionic bond
4) Van der Waals bond

1 Answer

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Final answer:

A hydrogen bond is the type of bond that holds together neighboring subunits in a single strand of DNA. Hydrogen bonds are relatively weak compared to covalent bonds, but they play a crucial role in stabilizing the structure of DNA, as well as other biological molecules like proteins.

Step-by-step explanation:

A hydrogen bond is the type of bond that holds together neighboring subunits in a single strand of DNA.

Hydrogen bonds are formed between a hydrogen atom, which is covalently bonded to a small, highly electronegative atom like oxygen or nitrogen, and a lone pair of electrons on an atom in the neighboring molecule.

Hydrogen bonds are relatively weak compared to covalent bonds, but they play a crucial role in stabilizing the structure of DNA, as well as other biological molecules like proteins.

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